A depository institution is a bank, savings association, or credit union that accepts deposits from the public and uses that money to make loans. Federal law groups banks and savings associations together under the term, and credit unions do the same work under a separate regulatory framework.1Office of the Law Revision Counsel. 12 U.S. Code 1813 – Definitions If your money sits in a checking account, a savings account, or a certificate of deposit, it is almost certainly sitting in a depository institution.
How the Model Works
The business is simple at its core. The institution pays you a small amount of interest to hold your money, then lends that money to someone else at a higher rate. The spread between the two is its main revenue. Your account is a liability on its books because it owes you the balance on demand or at maturity. The loans it writes with pooled deposits are its assets.
Pooling is the real service. Without depository institutions, anyone needing a mortgage would have to find individual lenders willing to tie up their money for 15 or 30 years. Depository institutions take short-term deposits from thousands of customers and transform them into longer-term loans, absorbing risk and complexity that individual savers and borrowers could not manage efficiently on their own.
Since March 2020, these institutions have not been required to hold any minimum percentage of deposits in reserve. The Federal Reserve set reserve requirement ratios to zero for all depository institutions, and that policy remains in effect.2Board of Governors of the Federal Reserve System. Reserve Requirements Institutions still keep reserves voluntarily for liquidity, but the textbook rule about a mandatory reserve ratio no longer applies.
The Three Types
Commercial Banks
Commercial banks are the largest category by total assets. They are usually organized as stock-owned corporations, meaning shareholders own the bank and expect a return. They offer the widest range of services: personal and business checking, loans of every type, credit cards, wealth management, foreign exchange, and international wire transfers. National banks receive their charter from the Office of the Comptroller of the Currency; state-chartered banks are licensed by their state banking authority.3Office of the Comptroller of the Currency. About Us
Savings Institutions
Savings institutions include savings and loan associations and savings banks. They historically concentrated on residential mortgage lending, and many still emphasize home loans over commercial lending. A number of them operate under a mutual ownership structure, where depositors themselves are the legal owners rather than outside shareholders. That model tends to orient the institution toward community lending and conservative growth rather than quarterly profit maximization.
Credit Unions
Credit unions are not-for-profit cooperatives owned and run by their members.4National Credit Union Administration. Not-for-Profit and Tax-Exempt Status of Federal Credit Unions Federal law requires membership to be limited to people who share a common bond. That bond can take one of three forms: a single occupational or associational group, multiple such groups each sharing their own bond, or a well-defined local community or neighborhood.5GovInfo. 12 U.S. Code 1759 – Membership Because credit unions don’t need to generate profits for shareholders, they can often offer lower loan rates and higher deposit rates than commercial banks. Their federal tax-exempt status supports that pricing.6Internal Revenue Service. Other Tax-Exempt Organizations
What Is Not a Depository Institution
The defining feature is that the institution accepts deposits. Non-depository financial institutions extend credit or provide other financial services but do not take deposits from the public. Mortgage companies, payday lenders, insurance companies, and brokerage firms all fall into this category. They may lend money, but they fund those loans through other sources, such as selling securities on capital markets or collecting insurance premiums.
The distinction matters because depository institutions are subject to a different and generally more intensive set of federal regulations, including mandatory deposit insurance. When you put money into a non-depository institution’s investment product, you typically have no government insurance backstop if the firm fails.
Where Neobanks Fit
Digital-only financial apps have blurred this picture for many consumers. Most neobanks are not themselves depository institutions. They operate as technology companies that provide a digital interface, while behind the scenes a traditional chartered bank holds your deposits and provides the banking infrastructure. Your deposit insurance coverage flows through that partner bank, not the app.
A small number of fintech companies have obtained their own bank charters, which makes them full depository institutions that control both the customer experience and the underlying banking operations. The vast majority rely on partnerships with chartered institutions. Before depositing money through any digital financial app, confirm which FDIC-insured or NCUA-insured institution actually holds your funds. The FDIC has taken enforcement action against companies that misrepresented their insurance status to consumers.7Federal Deposit Insurance Corporation. Financial Products That Are Not Insured by the FDIC
What Deposit Insurance Covers
Deposit insurance is the feature most people care about, and the coverage is broader than many realize. At FDIC-insured banks, standard coverage is $250,000 per depositor, per insured bank, for each ownership category. A single person with a checking account, a savings account, and a CD at the same bank is covered up to $250,000 across all three combined. If that same person also holds a joint account or a trust account at the same bank, each ownership category gets its own separate $250,000 limit.8Federal Deposit Insurance Corporation. Deposit Insurance FAQs
Credit unions insured through the NCUA provide equivalent protection. The National Credit Union Share Insurance Fund covers individual accounts up to $250,000, joint accounts up to $250,000 per member’s interest, and IRA and Keogh retirement accounts up to $250,000 separately.9National Credit Union Administration. Share Insurance Coverage
What catches people off guard is what deposit insurance does not cover. Even if you buy them at an insured bank, the following are not protected:
- Stocks, bonds, and mutual funds
- Crypto assets
- Annuities and life insurance policies
- Municipal securities
- Contents of safe deposit boxes
U.S. Treasury securities are also not FDIC-insured, though they carry their own backing from the full faith and credit of the federal government.7Federal Deposit Insurance Corporation. Financial Products That Are Not Insured by the FDIC
Who Regulates These Institutions
Depository institutions operate under overlapping layers of federal oversight. Which agency regulates a given institution depends on its charter and structure.
- The Office of the Comptroller of the Currency charters, regulates, and supervises all national banks and federal savings associations as an independent bureau of the Treasury.3Office of the Comptroller of the Currency. About Us
- The Federal Reserve System serves as the central bank, manages monetary policy, and acts as lender of last resort. It also supervises bank holding companies and state-chartered member banks.10Board of Governors of the Federal Reserve System. Speech by Vice Chairman Fischer – The Lender of Last Resort Function in the United States
- The Federal Deposit Insurance Corporation insures deposits at banks and savings associations up to $250,000 per depositor, per ownership category, and supervises state-chartered banks that are not members of the Federal Reserve System.11Federal Deposit Insurance Corporation. Understanding Deposit Insurance
- The National Credit Union Administration charters and regulates federal credit unions and runs the National Credit Union Share Insurance Fund.12National Credit Union Administration. About the National Credit Union Administration
State-chartered institutions also answer to their state banking regulator, creating a dual regulatory system. The overlap can look redundant, but it builds in multiple checkpoints meant to catch problems before they reach depositors.